Febrile ulceronecrotic Mucha–Habermann disease (FUMHD) is a rare and severe form of pityriasis lichenoides, which also includes two other types: pityriasis lichenoides et varioliformis acuta (PLEVA), and pityriasis lichenoides chronica (PLC).1 FUMHD is a life-threatening disorder and usually know as a subtype of PLEVA, characterized by acute onset of generalized ulceronecrotic papules and plaques associated with fever and rapidly progressive course without any tendency to spontaneous resolutio